{Mix.ar(SinOsc.ar([100,101],0,[0.5,0.5]))}.scope;
{SinOsc.ar([100,101])}.scope; 

{Klank.ar([100,103],1)}.scope;

Prand([0,1,2,3,],4).collect;

{Pan4.ar(SinOsc.ar,MouseX.kr(-1,1),MouseY.kr(-1,1),0.3)}.scope(4);

a = Pbind(\x, 77, \y, Pseq([1, 2, 3]));
x = a.asStream;
4.do { x.next(Event.new).postln }; 